Marie of Lusignan or Marie I de Lusignan (born 1223 in Eu, Seine-Maritime, France, died in Poitou, 1 October 1260; buried at the Abbey of Foucarmont), was the only child of Raoul II of Lusignan and his second wife, Yolande de Dreux.
[1] She became Dame d'Exoudun, Countess of Eu on the death of her father in 1246.
She was married around 1245 to Alphonso of Brienne[1] who became Count of Eu by this marriage.
Marie and Alphonso had at least two children: